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Research ArticleHead & Neck

CT versus MR Imaging in Estimating Cochlear Radiation Dose during Gamma Knife Surgery for Vestibular Schwannomas

A.M. Faramand, H. Kano, S. Johnson, A. Niranjan, J.C. Flickinger and L.D. Lunsford
American Journal of Neuroradiology October 2018, 39 (10) 1907-1911; DOI: https://doi.org/10.3174/ajnr.A5808
A.M. Faramand
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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H. Kano
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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S. Johnson
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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A. Niranjan
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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J.C. Flickinger
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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L.D. Lunsford
aFrom the Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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    Fig 1.

    CCC plot comparing the cochlear volume as identified on CT and MR imaging. A CCC score of 0.16 indicates a poor correlation between the 2 imaging modalities in identifying cochlear volume.

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    Fig 2.

    CCC plot comparing the mean radiation dose delivered to the cochlea as identified on CT and MR imaging. A CCC score of 0.86 indicates an almost perfect relationship in identifying the mean cochlear dose between CT and MR imaging.

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    Fig 3.

    CCC plot comparing the maximum radiation dose delivered to the cochlea as identified on CT and MR imaging. A CCC score of 0.89 indicates an almost perfect relationship in identifying the mean cochlear dose between CT and MR imaging.

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    Fig 4.

    CCC plot comparing the volume of the cochlea receiving 4.2-Gy volume as identified on CT and MR imaging. A CCC score of 0.87 indicates an almost perfect correlation between CT and MR imaging in identifying the cochlear volume receiving 4.2 Gy.

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American Journal of Neuroradiology: 39 (10)
American Journal of Neuroradiology
Vol. 39, Issue 10
1 Oct 2018
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Cite this article
A.M. Faramand, H. Kano, S. Johnson, A. Niranjan, J.C. Flickinger, L.D. Lunsford
CT versus MR Imaging in Estimating Cochlear Radiation Dose during Gamma Knife Surgery for Vestibular Schwannomas
American Journal of Neuroradiology Oct 2018, 39 (10) 1907-1911; DOI: 10.3174/ajnr.A5808

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CT versus MR Imaging in Estimating Cochlear Radiation Dose during Gamma Knife Surgery for Vestibular Schwannomas
A.M. Faramand, H. Kano, S. Johnson, A. Niranjan, J.C. Flickinger, L.D. Lunsford
American Journal of Neuroradiology Oct 2018, 39 (10) 1907-1911; DOI: 10.3174/ajnr.A5808
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